METHOD OF CONTINUOUS STEELMAKING AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2010 - IPC C21B13/14 

FIELD: metallurgy.

SUBSTANCE: steelmaking is implemented in four tandem reactors with portion delivery of metal from the first reactor into the second reactor and with full delivery of metal from the second reactor into the third and from the third into fourth through sliding shutters. Charged materials, metal and slag in all reactors is heated by radiation of optical laser oscillators of large energy density in the form of lasers with ability of displacement of radiation direction by surface of tank. In the first reactor for implementation of recovery it is continuously charged concentrate of iron ore, it is molten and blasted by reducing gas with addition of grinned coal with providing of content of ferric oxide in melt not less than 30-40%. In the second reactor for implementation of dephosphorisation and decarbonisation metal is blasted by oxygen and charged into its surface lime carbonate for formation of slag. In the third reactor for implementation of desulphurising into metal it is injected reducing gas, it is charged lime carbonate with fluorite, deoxidising agents and metal is mixed by gas. In the fourth reactor for implementation o finishing, it is dressed chemical composition and temperature of metal up to specified, it is implemented blending of metal by gas and degassing.

EFFECT: increasing of productivity of steelmaking unit and reduction of cost value of molten steel.

2 cl, 1 dwg